ports and irrigation and water conservancy construction projects.

Composition and working principle of hydraulic and electrical systems bulldozers bulldozers knowledge of safe operation and maintenance of knowledge, typehydrostatically drive crawler tractor, the overall structure and application, bulldozers major component structure and working principle parts, bulldozer common failure modes and causes of failure, knowledge of other typical form bulldozer damage and repair methods bulldozer wearing parts, elevated driving hydrostatic driven earthmover, hydraulic bulldozer, Wheel bulldozer and military bulldozers, which are intended to expand the students' professional horizons. Highlands Dozer is a classic earthwork machinery, widely used in highway, railway, construction, utilities, ports and irrigation and water conservancy construction projects.